The Bolt,internal Wrenching, cataloged under National Stock Number 5306-01-258-9098, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Schroff Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-258-9098 |
| Primary Part Number | 50253-4.70 |
| Item Name | Bolt,internal Wrenching |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Schroff Inc |
| Status | ACTIVE |
| Width Across Flats | 0.094 INCHES NOMINAL IN |
| Head Height | 0.100 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Fastener Length | 4.610 INCHES MINIMUM AND 4.700 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 1.000 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | FLUSH |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HIGH-TORQUE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.160 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 52PSW00A0001 | Lumentum Technology Uk Limited (GBR) |
| 50253-4.7 | Schroff Inc (USA) |
| 50253-4.70 PRIMARY | Schroff Inc (USA) |
| Reference | Meaning |
|---|---|
| 50253-4.70 | 3/9 Design control — primary reference Calmark Corporation |
| 50253-4.7 | 5/9 Secondary reference Calmark Corporation |
NSN 5306-01-258-9098 is a Bolt,internal Wrenching, manufactured by Schroff Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-258-9098 has 3 manufacturer part numbers on file: 52PSW00A0001 (Lumentum Technology Uk Limited), 50253-4.7 (Schroff Inc), 50253-4.70 (Schroff Inc).
Key specifications for 50253-4.70: Width Across Flats: 0.094 INCHES NOMINAL IN; Head Height: 0.100 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN; Fastener Length: 4.610 INCHES MINIMUM AND 4.700 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 16 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.